How To Fix GP853 - Unique assignment between source and target objects not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: GP - FI-SL and CO planning

• Message number: 853

• Message text: Unique assignment between source and target objects not possible

What causes this issue?

The object number tables for the source and target version that were
transferred when function module &V1& was called cannot be assigned to
each other unambiguously.

System Response

The function module terminates processing.

How to fix this error?

See the options for transferring object number tables in the function
module documentation.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GP853 - Unique assignment between source and target objects not possible ?

  The SAP error message GP853, which states "Unique assignment between source and target objects not possible," typically occurs in the context of SAP's Global Payroll or Personnel Administration modules. This error indicates that there is an issue with the assignment of objects (such as infotypes, wage types, or other payroll-related entities) where the system expects a unique relationship but finds multiple entries or conflicts.
  Causes:
  
  
  Duplicate Entries: There may be duplicate entries in the source or target objects that the system is trying to assign. For example, if you are trying to assign a wage type to multiple employees or infotypes that should be unique.
  
  
  Incorrect Configuration: The configuration settings in the payroll or personnel administration modules may not be set up correctly, leading to conflicts in object assignments.
  
  
  Data Inconsistencies: There may be inconsistencies in the data, such as overlapping validity periods for infotypes or wage types.
  
  
  Custom Enhancements: If there are custom enhancements or modifications in the system, they might be causing unexpected behavior leading to this error.
  
  
  Solutions:
  
  
  Check for Duplicates: Review the entries in the source and target objects to ensure there are no duplicates. This can often be done through transaction codes like PA20 (Display HR Master Data) or PA30 (Maintain HR Master Data).
  
  
  Review Configuration: Go through the configuration settings in the relevant modules (e.g., Payroll, Personnel Administration) to ensure that they are set up correctly. This may involve checking the assignment of wage types, infotypes, or other related objects.
  
  
  Data Cleanup: If there are inconsistencies in the data, you may need to clean up the data by correcting or removing conflicting entries. This could involve adjusting validity periods or removing duplicate records.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific version of SAP you are using. There may be known issues or patches that address this error.
  
  
  Debugging: If the issue persists, consider debugging the process to identify where the conflict is occurring. This may require technical expertise in ABAP or SAP configuration.
  
  
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance. They may provide insights or solutions based on the specific context of your system.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as PA20, PA30, and others that are used for managing HR data.
  SAP Notes: Search for SAP Notes related to error GP853 in the SAP Support Portal, as they may provide specific guidance or patches.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the GP853 error and implement a solution to resolve it.